Mastering JS@mastering_js

Bite sized JavaScript tutorials for busy developers Follow us on Substack: masteringjs.substack.com

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masteringjs.io
Joined May 2021
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Mastering JS retweeted
mongoosejs@mongoosejs
17 Oct 2024
Mongoose 8.7.2 released 🛠️ Recursively clear modified subpaths when setting deeply nested subdoc to null 📚 Make Buffers into mongodb.Binary in lean result type to match runtime behavior github.com/Automattic/mongoo… #NodeJS #MongoDB #JavaScript

Release 8.7.2 · Automattic/mongoose

8.7.2 / 2024-10-17 fix(document): recursively clear modified subpaths when setting deeply nested subdoc to null #14963 #14952 fix(populate): handle array of ids with parent refPath #14965 types: m...

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Mastering JS retweeted
mongoosejs@mongoosejs
9 Oct 2024
Mongoose 8.7.1 released 🛠️ Set flattenObjectIds to false when calling toObject() for internal purposes 🛠️ Add mongodb 8 to test matrix github.com/Automattic/mongoo… #NodeJS #MongoDB

Release 8.7.1 · Automattic/mongoose

8.7.1 / 2024-10-09 fix: set flattenObjectIds to false when calling toObject() for internal purposes #14938 fix: add mongodb 8 to test matrix #14937 fix: handle buffers stored in MongoDB as EJSON r...

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I've worked with S-Tier programmers that dev on Linux. Also ones that dev on OSX. Even a couple that dev on Windows Sorry to say it, but switching OS won't make you a better developer #CodeNewbie #JavaScript
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Make a Sinon Spy Return a Value masteringjs.io/tutorials/sin… #CodeNewbie

Make a Sinon Spy Return a Value

Here's how to make a spy return a value in Sinon.js

masteringjs.io
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How We Think About Securing Express.js APIs in 2024 dev.to/masteringjs/how-we-th… #NodeJS #CodeNewbie

How We Think About Securing Express.js APIs in 2024

Securing your Express.js API involves a lot of tradeoffs. Do you use cookies or authorization header,...

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Express 5.0 PR just closed: github.com/expressjs/express… #NodeJS

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Good naming means making your names specific enough to inform what the function is doing from the function name Today we saw a function named `parseAndValidateUserData()` 😭😭😭 On a scale from 1-10, that's a 2. 1 would be function named `doStuff()` #100DaysOfCode
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🆕 Check if a File Exists in Node.js masteringjs.io/tutorials/nod… #NodeJS #CodeNewbie

Check if a File Exists in Node.js

Here's how you can check if a file exists using the fs module in Node.js

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🆕 How to Set Response Headers in Express masteringjs.io/tutorials/exp… #JavaScript #CodeNewbie

How to Set Response Headers in Express

Here's how you can set HTTP response headers in Express.js

masteringjs.io
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🆕 trim() in Mongoose Schemas masteringjs.io/tutorials/mon… #NodeJS #CodeNewbie

trim() in Mongoose Schemas

The `trim` option in Mongoose schema definitions makes Mongoose automatically call `String.prototype.trim()` on string fields. Here's how it works.

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🆕 Set Whether a Checkbox is Checked in Vue masteringjs.io/tutorials/vue… #JavaScript #VueJS #CodeNewbie

Set Whether a Checkbox is Checked in Vue

Here's how you can set whether a checkbox is checked in Vue

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Mastering JS retweeted
Mastering JS@mastering_js
21 Jun 2021
We just enabled @GitHub sponsors for Mastering JS, check it out! github.com/sponsors/masterin… #DevCommunity #JavaScript #100DaysOfCode

Sponsor @mastering-js on GitHub Sponsors

Free resources for learning pragmatic, effective web development

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Mastering JS retweeted
Mastering JS@mastering_js
12 Aug 2021
🆕 Convert Pug to HTML masteringjs.io/tutorials/nod… #JavaScript #CodeNewbie #NodeJS

Convert Pug to HTML

Convert Pug to HTML in your browser, with syntax highlighting!

masteringjs.io
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Mastering JS retweeted
Mastering JS@mastering_js
23 Aug 2021
Controversial take: you shouldn't use `forEach()` in modern JavaScript. Only possible exception is if you have a quick one-liner or if you really really know what you're doing. Here's why: masteringjs.io/tutorials/fun… #JavaScript #CodeNewbie

How to Iterate through an Array in JavaScript

There are numerous ways to iterate through an array in JavaScript. Here's what you need to know.

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Mastering JS retweeted
Mastering JS@mastering_js
24 May 2021
JavaScript doesn't support named parameters, but destructuring objects can let you fake named parameters. Just make the first parameter an object and destructure: masteringjs.io/tutorials/fun… #javascript #CodeNewbie
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Mastering JS retweeted
Mastering JS@mastering_js
30 Jun 2021
We find ourselves going back to this tutorial EVERY SINGLE TIME we add Webpack to a new project. masteringjs.io/tutorials/web… If only we could find a way to memorize Webpack configs 😆 Or maybe just write a CLI tool? 🤔 #CodeNewbie #100DaysOfCode

An Introduction to Webpack Configs

Webpack configs are a common source of confusion, but they are actually pretty simple to write by hand. Here's what you need to know.

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Mastering JS retweeted
Mastering JS@mastering_js
21 May 2021
Did you know you can use `URL.createObjectURL()` to create a preview of the file the user selected with an `<input type="file">`? Here's how this works in @VueJS : masteringjs.io/tutorials/vue… #VueJS #javascript #CodeNewbie
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🌟 JavaScript Array flatMap() 🌟 masteringjs.io/tutorials/fun… #JavaScript #CodeNewbie

JavaScript Array flatMap()

Here's how JavaScript arrays' `flatMap()` method works, and what you can use it for..

masteringjs.io
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Mastering JS retweeted
Valeri Karpov@code_barbarian
21 May 2024
Thanks @tailwindcss for making it possible to build this UI in under 10 mins Most of that was just scrolling through Tailwind UI picking what I liked #CodeNewbie #100DaysOfCode
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🌟 How to Get Distinct Values in a JavaScript Array 🌟 masteringjs.io/tutorials/fun… #JavaScript #CodeNewbie

How to Get Distinct Values in a JavaScript Array

Here's how you can use ES6 Sets to get distinct values in an array.

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